Hi,

I'm trying to process some .nirs files created by a NIRSport system. I would like to analyze them in spm_fnirs but I'm having trouble getting the .nirs files into the NIRS.mat format. I've loaded an old NIRS.mat file in matlab and primarily determined what information is contained in the P and Y structures but there are a few subfields that I can't figure out. Does anyone know what these subfields are?

P.K.M.th
P.K.M.alpha

Any help is greatly appreciated!